Abstract: In this study 2466 high school student cnmpleted an anonymous questionnaire concerned with their experience with specific suicide behaviours during the 12months preceding the survey and related factors Among all students is 19.7 percent had thought seriously about attempting suicide, 8.3 percent had mada specific plan to attempt suicidp and 3.0 pe rcent actually had attempted suicide using multip Ulogstic regression analysis it was found that main risk factors among three specifice suicide behaviours had females depressiob and anxiety symtoms Physical fighting cigarette smoking stage of junior high school alcohol use, lower academic achievement and lower deducational level for father were significantly accocisted with attempted suicide in the subjects.